What does the 'pch' option to par() control? - R Quiz

R - Quiz(MCQ)

What does the 'pch' option to par() control?

A)

the plotting symbol/character in the base graphics system

B)

the line width in the base graphics system

C)

the orientation of the axis labels on the plot

D)

the size of the plotting symbol in a scatterplot

Correct Answer : the plotting symbol/character in the base graphics system

Explanation : R makes it easy to combine multiple plots into one overall graph, using either the par ( ) or layout( ) function.

Recently Updated in R Questions

_____ is simplest class of analytics.

A)

Predictive

B)

Prescriptive

C)

Summarization

D)

Descriptive

Correct Answer : Descriptive

Explanation : Descriptive is the simplest class of analytics. Predictive analytics can only forecast what might happen in the future because all predictive analytics are probabilistic in nature.

Which of the following involves predicting a categorical response?

A)

Classification

B)

Clustering

C)

Regression

D)

Summarization

Correct Answer : Classification

Explanation : Classification techniques are widely used in data mining to classify data.

________ is proprietary tool for predictive analytics.

A)

R

B)

EDR

C)

SAS

D)

SSAS

Correct Answer : SAS

Explanation : SAS (Statistical Analysis System) is a software suite developed by SAS Institute for advanced analytics.

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